Keithley 7012-C, Instruction Manual, Page: 24 / 93

Matrix Switching Basics
2-7
Wide matrix expansion (8
×
10 matrix)
A wide 8 row
×
10 column matrix is shown in Figure 2-
10. For this con Þ guration, the 10 columns of the two
matrix cards must be physically hard-wired together.
Also note that the backplane jumpers on one of the
cards must be removed in order to isolate the rows of
the two cards from each other.
Mixing card types
Different types of cards can be used together to create
some unique switching systems. For example, you
Figure 2-9
Narrow matrix example (4
×
20)
1
2
3
4
1 10
Columns
7012
Rows
7001
Analog
Backplane
Card 1
Notes : Backplane jumpers on both
cards must be installed.
11 20
7012
Card 2
4 x 20 Matrix
Columns
could have a Model 7012 matrix card installed in one
slot and a Model 7011 multiplexer card installed in the
other slot.
Figure 2-11 shows a possible switching system using a
matrix card and a multiplexer card. The backplane
jumpers for both the matrix and multiplexer cards
must be installed. This allows matrix rows to be con-
nected to multiplexer banks. On the multiplexer card,
the bank-to-bank jumpers must be removed to main-
tain isolation between matrix rows. See the instruction
manual for the Model 7011 for complete information
on the multiplexer card.
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